The muscle that inserts into the calcaneus via the calcaneal tendon is which?

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Multiple Choice

The muscle that inserts into the calcaneus via the calcaneal tendon is which?

Explanation:
The calcaneal tendon (Achilles tendon) is the common insertion point into the heel bone for the deep posterior compartment muscles, primarily the gastrocnemius and the soleus, sometimes with plantaris. Among the options, only the soleus reaches the calcaneus through this tendon. The soleus originates from the proximal tibia and fibula (the soleal line) and blends its tendon with the gastrocnemius to attach to the calcaneus, enabling powerful plantarflexion of the ankle. The other muscles attach to different foot bones or toes rather than the heel via this tendon.

The calcaneal tendon (Achilles tendon) is the common insertion point into the heel bone for the deep posterior compartment muscles, primarily the gastrocnemius and the soleus, sometimes with plantaris. Among the options, only the soleus reaches the calcaneus through this tendon. The soleus originates from the proximal tibia and fibula (the soleal line) and blends its tendon with the gastrocnemius to attach to the calcaneus, enabling powerful plantarflexion of the ankle. The other muscles attach to different foot bones or toes rather than the heel via this tendon.

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